SUNGYE single-hung windows masterfully blend traditional charm with contemporary engineering. Featuring a classic upper sash fixed / lower sash operable design, they deliver:

✔ Streamlined Aesthetics – Clean sightlines perfect for colonial, cottage and traditional architectures
✔ Intuitive Operation – Smooth vertical sliding mechanism (tested to 50,000 cycles)
✔ Energy Efficiency – Optional Low-E glass achieves U-factors as low as 0.30
✔ Easy Maintenance – Tilt-in lower sash for convenient interior cleaning
✔ Child-Safe Design – Integrated sash locks meet ASTM F2090 standards

Technical Superiority:

• 1.25″ slim profile frames maximize glass area
• Reinforced meeting rails for enhanced security
• 3-point weatherstripping system (0.35 cfm/ft² air infiltration)

Perfect For:
• Historic home renovations requiring period-correct styling
• Budget-conscious projects without compromising quality
• Second-floor installations where tilt cleaning is essential

“While double-hung windows offer dual mobility, our single-hung models provide cost-effective simplicity with 20% greater structural strength at the meeting rail.”